VM: Remove unnecessary field use_kind from IL instructions.

runtime/vm/il_printer.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/il_printer.h"
 
 #include "vm/intermediate_language.h"
 #include "vm/os.h"
 #include "vm/parser.h"
 
@@ skipping 152 matching lines @@
   char buffer[1024];
   BufferFormatter f(buffer, sizeof(buffer));
   PrintICDataHelper(&f, ic_data);
   OS::Print("%s ", buffer);
   const Array& a = Array::Handle(ic_data.arguments_descriptor());
   OS::Print(" arg-desc %" Pd "\n", a.Length());
 }
 
 
 static void PrintUse(BufferFormatter* f, const Definition& definition) {
-  if (definition.is_used()) {
-    if (definition.HasSSATemp()) {
-      if (definition.HasPairRepresentation()) {
-        f->Print("v%" Pd ", v%" Pd "", definition.ssa_temp_index(),
-                                       definition.ssa_temp_index() + 1);
-      } else {
-        f->Print("v%" Pd "", definition.ssa_temp_index());
-      }
-    } else if (definition.temp_index() != -1) {
-      f->Print("t%" Pd "", definition.temp_index());
+  if (definition.HasSSATemp()) {
+    if (definition.HasPairRepresentation()) {
+      f->Print("v%" Pd ", v%" Pd "", definition.ssa_temp_index(),
+                                     definition.ssa_temp_index() + 1);
+    } else {
+      f->Print("v%" Pd "", definition.ssa_temp_index());
     }
+  } else if (definition.HasTemp()) {
+    f->Print("t%" Pd "", definition.temp_index());
   }
 }
 
 
 const char* Instruction::ToCString() const {
   char buffer[1024];
   BufferFormatter f(buffer, sizeof(buffer));
   PrintTo(&f);
   return Isolate::Current()->current_zone()->MakeCopyOfString(buffer);
 }
@@ skipping 13 matching lines @@
 void Instruction::PrintOperandsTo(BufferFormatter* f) const {
   for (int i = 0; i < InputCount(); ++i) {
     if (i > 0) f->Print(", ");
     if (InputAt(i) != NULL) InputAt(i)->PrintTo(f);
   }
 }
 
 
 void Definition::PrintTo(BufferFormatter* f) const {
   PrintUse(f, *this);
-  if (is_used()) {
-    if (HasSSATemp() || (temp_index() != -1)) f->Print(" <- ");
-  }
+  if (HasSSATemp() || HasTemp()) f->Print(" <- ");
   if (GetDeoptId() != Isolate::kNoDeoptId) {
     f->Print("%s:%" Pd "(", DebugName(), GetDeoptId());
   } else {
     f->Print("%s(", DebugName());
   }
   PrintOperandsTo(f);
   f->Print(")");
   if (range_ != NULL) {
     f->Print(" ");
     range_->PrintTo(f);
@@ skipping 843 matching lines @@
 }
 
 const char* Environment::ToCString() const {
   char buffer[1024];
   BufferFormatter bf(buffer, 1024);
   PrintTo(&bf);
   return Isolate::Current()->current_zone()->MakeCopyOfString(buffer);
 }
 
 }  // namespace dart